Air conditioning for extensions and kitchen-diners in Horley
For a kitchen-diner in Horley, we place the indoor unit clear of the hob and plan the outdoor unit at the rear. Hot spells reach the South East early, which makes spring the easiest time to arrange an installation.
An extension in Horley with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon. We cover Horley as part of Surrey, roughly 20 miles from Woking. Postcode districts we cover here include RH6.
Prices in Horley
Budget around £1,745–£5,445 per space including VAT for air conditioning for extensions and kitchen-diners in and around Horley. Prices here sit above the national middle, reflecting South East England labour rates and parking and access costs. Longer or hidden pipe runs, high-level brackets and electrical upgrades are the usual reasons a quote lands at the top of the range. Typical Large single work (one 5–7 kW unit for a large glazed space) lands around £2,495–£3,495 in this area.
Single unit
One 3.5–5 kW unit for a medium extension.
Large single
One 5–7 kW unit for a large glazed space.
Twin units
Two indoor units on a multi-split for long or L-shaped spaces.
Guide prices show VAT at 20%. HMRC treats most fixed air conditioners and air-to-air heat pumps installed in homes as energy-saving materials, zero-rated until 31 March 2027 when we supply and fit them. If your installation qualifies, your quote shows 0% VAT and a lower price. Servicing, repairs, cleaning and controls are charged at 20%.
Planning and permissions
For most houses in Horley, the outdoor unit is permitted development if it passes the MCS 020(a) noise check (37 dB(A) or less at the nearest neighbouring window) and stays within the size and number limits. We run that check on survey.
The survey
A survey in Horley usually takes one to two hours. We measure the rooms, check the walls and the consumer unit, agree the outdoor unit position with you and photograph the pipe routes. Surveys in Horley cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare.
What is included
Every job in Horley includes:
- One or two units sized for the whole space
- Hidden routes during the build, or neat surface routes after
- Pressure test, vacuum and commissioning
- Handover of the remote or app
- Placement clear of the hob and oven
Nearby
Nearby, we also cover Crawley (4 miles), Redhill (5 miles) and Reigate (5 miles). See all services in Horley or air conditioning for extensions and kitchen-diners across Surrey.

